I've done about 300 miles in my Cinq now and I've noticed it has an intermittent misfire.

Not sure when it was serviced last so I'm going do plugs and leads first of all.

I have noticed however that there has been some rewiring done on the plug for the rear of the two coil packs. So I'm going to check this out as well. I remember when I had my Sei and Punto 55 that coil packs seem to need replacing quite a lot on these engines. So if the plugs and leads don't cure it, I'll buy a new one from Fiat. They were only £20 when I bought one last.

What is the NGK part number for the Cinq plugs?

doe anyone else have any ideas for the misfire?

Thanks.

i would say leads as well, its probably still got the ones it was born with

Get good (original) leads,cheap ones are just false economy.

Yep, as I do with all my cars.

Puntoboy said:

Yep, as I do with all my cars.

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Id use Champion EON2's as they're a good plug for the engine

Really? Never had much luck with Champions on my Punto.

Puntoboy said:

Really? Never had much luck with Champions on my Punto.

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Yea, been running champions for a while now, definately a cut above the old original NGK's i had in there. I had Bosche super 4's in for a day too before going back to champion

Though im running them with magnecor KV85 leads, but cant see that'd improve things that greatly over an OEM lead

i hate Champions as well, had trouble with them on lots of cars and lambrettas, wont touch them no more

Do you know the champion part number?

Puntoboy said:

Do you know the champion part number?

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EON2 - they're in a blister pack of 4 usually hanging up on wall (if from halfords)

Oh sorry, thought that was the model number. Cheers.

dave said:

i hate Champions as well, had trouble with them on lots of cars and lambrettas, wont touch them no more

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yea, were they the cheaper "OEM" spec ones or the better EON range? EON's are not the normal spark plug, they have a better core on them..